Mario Leissner
Recognized in Best Lawyers since 2017 About Mario Leissner
Mario Leissner is a lawyer based in Frankfurt/Main, DE and has been recognized in The Best Lawyers in Germany™ since 2017. Mario Leissner is recognized in the following practice areas:
- Frankfurt/Main, Germany
- Investment Funds
- Private Funds
- Real Estate Law
Current Firm: Leissner Law
Location: Frankfurt/Main, DE
Nearby Lawyers
Criminal defense since 2007 During this time I was able to learn and experience a great deal – experiences that shaped me, sharpened my understanding of criminal law and influenced my current way of working. My path to criminal defense, however, began much earlier. Even during my studies in Konstanz, I consistently focused on criminal law. During my legal traineeship, I also deliberately chose placements with a criminal law focus – including a renowned criminal defense lawyer spec...
Heiko Kermer is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Heiko, who practices law in Frankfurt/Main, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Heiko is held by other top lawyers in the same geographic and legal practice area.
Dr. Holger Hofmeister advises corporate clients and private equity firms in connection with acquisitions, divestitures, public takeovers, joint ventures, and other M&A and corporate matters, including capital markets-related issues. In addition, he advises on corporate governance-related matters and corporate restructurings.
Dr. Wolf-Henrik Friedrich advises pharmaceutical companies in the field of healthcare advertising law and the associated areas of pharmaceutical law and medicinal product law. He offers guidance to medium-sized companies from various sectors in intellectual property rights, especially competition law, trademark law and copyright law and also provides legal advice in matters pertaining to corporate law and the merger-control aspects of transactions. In addition, he organises and assists in the...
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer
Reddit’s Lawsuit Could Change How Much AI Knows About You
by Justin Smulison
Big AI is battling for its future—your data’s at stake.
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
